MACNBR 00242
MUSEO ARGENTINO DE CIENCIAS NATURALES "BERNARDINO RIVADAVIA"
Unidad Ejecutora - UE
artículos
Título:
Fossil woods from the Oligocene of southwestern Patagonia (Río Leona Formation). Rosaceae and Nothofagaceae
Autor/es:
PUJANA, ROBERTO ROMÁN
Revista:
AMEGHINIANA
Referencias:
Año: 2009
ISSN:
0002-7014
Resumen:
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Systematic studies of
angiosperm fossil woods from sediments of the Río Leona Formation were
continued. A new morphospecies of Maloidoxylon
with affinity to Rosaceae was described and constitutes, together with the
fossil pollen from the same strata, the oldest South American fossil with this familial
affinity. Nothofagaceae fossil woods are represented by the morphospecies Nothofagoxylon scalariforme, Nothofagoxylon kraeuseli, Nothofagoxylon triseriatum, Nothofagoxylon ruei and a new
morphospecies of Nothofagoxylon. Three
of the four subgenera of Nothofagus were
recognized in the fossil woods and a new infrageneric affinity for Nothofagoxylon ruei was proposed. The
described woods have affinity to extant genera and species that inhabit Patagonia, except for the Rosaceae wood where the generic affinity
is not well-established.
